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Flowchart showing participant inclusion. Curved arrows indicate excluded participants. Of the 155 donors enrolled between 2008 and 2013, 92 (81 with CTE, 11 without CTE) were included in the analytic set. Of the 249 donors enrolled between 2014 and 2017, 163 (142 with CTE, 21 without CTE) were included in the final analytic set. CTE = chronic traumatic encephalopathy; FHS: Framingham Heart Study; VA‐BU‐CLF: Veterans Affairs–Boston University–Concussion Legacy Foundation.
